Abrading-tool.



J. GOULDBOURN.

ABRADING TOOL.

APPLICATION FILED APB..8, 1911. RENEWED OCT. 7. 1913.

1,091,506, Patented Mar. 31,1914.

2 SHEETS-SHEET l.

WT/VZSSZS? J. GOULDBOURN. ABRADING TOOL. APPLICATION FILED APILS, 1911, RENEWED 0cm. 7, 1913.

1,091,506. Patented Mar. 31, 1914.

2 SHEETS-SHEET 2.

WT/VESSES //\/l/E/\/ 0 COLUMBIA PLANOGRAPH Cm. WASHINGTON, n. c.

UNTTED S JOSEPH GOULDBOURN, OF LEICESTER, ENGLAND, ASSIGNOR T0 UNITED SHOE MACHINERY COMPANY, OF PATERSON, NEW JERSEY, A CORPORATION OF NEVV' JERSEY.

ABRADING-TOOL.

To all whom it may concern:

Be it known that I, JOSEPH GoULnnoUnN, a subject of the King of England, residing at Leicester, Leicestershire, England, have invented certain Improvements in Abrading Tools, of which the following description, in connection with the accompanying drawings, is a specification, like reference characters on the drawings indicating like parts in the several figures.

This invention relates to rotary devices having peripheral covers of abrading material which are adapted to be replaced, and is herein illustrated as embodied in a heel scouring roll. This type of device commonly comprises two abutting cover-supporting half-sections which are pivoted together at one of their junctures so that their abutting faces at the diametrically opposite juncture may be separated to provide an opening to receive therein the ends of the strip of abrading material which forms the cover; and, in order to grip the ends of the cover securely, a latch or other fastening has been employed. One of these half-sections is fast to the shaft and is commonly called the fixed section to dist'nguish it from the other half-section to which it is pivoted, said other half-section being known as the movable section. As heretofore constructed, if the movable section is not securely locked in gripping position before the machine is started it will be swung outwardly by centrifugal force; and when in this position it is liable to injure the work or the operator or to strike some portion of the machine and thereby be damaged.

Accordingly, the general object of the present invention is to prevent the outward swinging movement. And to this end one feature consists in the provision of a rotary device comprising a. plurality of relatively movable cover-supporting sections one of which is fast to the driving shaft while the other is movable with respect tothe first in a path which lies substantially within the periphery of the device. With such a construction and arrangement it is impossible for any portion of the movable section to be swung outwardly beyond the periphery of the device, and since the damaging effects referred to above were due to such out Specification of Letters Patent.

Patented Mar. 31, 1914.

Renewed October 7, 1913. Serial No. 793,964.

ward swinging movement, said effects are entirely obviated.

With rolls which, if started into rotation while open, tend to open wider as the rotation continues, even though no actual material damage results from such starting, nevertheless a certain amount of inconvenience and loss of time is inevitable since the machine must be stopped and the sections of the roll properly fastened in closed position before any work can be done.

Accordingly, another feature of the present invention consists in the provision in a device of the class described of a plurality of relatively movable cover-supporting sections and connecting means between said sections constructed and arranged to cause the centrifugal force generated by the rotation of the device to impart approaching movement to the open sections and to press them firmly together when closed. Any suitable construction and arrangement may be used, and in the illustrated embodiment the section which is fixed to the shaft is greater than a halfsection, and the movable section is pivoted to the fixed section at a point which is nearer to the gripping end of the movable section than to the other end of said section.

Another feature of the invention consists in the provision of means for automatically locking the sections in open position and in closed position.

These and other features of the invention including certain details of construction and combinations of parts will be described in connection with an illustrative device and pointed out in the appended claims.

In the accompanying drawings :Figure 1 is a view in perspective of a heel scouring roll made according to this invention showing the sections in closed position; Fig. 2 is a view similar to Fig. 1 showing the sections in open position; and Fig. 3 is a detail of the locking mechanism.

Referring to the drawings, the main section 1 of the wheel is adapted to be secured in a fixed position upon a rotatable shaft, and a movable section 3 is pivotally connected at 5 to the main section 1 for a purpose which will presently be described. The two sections 1 and 3 thus form, when in a closed position (see Fig. 1) a circular supporting surface adapted to sustain a flexible pad 7 that forms a support for a thin cover of abrasive material 9. The gripping faces 11, 13 between which the ends of the strip 9 of abrasive material are held have pins 15 projecting therefrom to facilitate the application of the cover and to assist in retaining it in working position.

The movable section 3 is provided with a boss 17 that is nearer its gripping end than its other end, the said boss being pivoted at 5 to the main section 1. The pivot 5 is so located on the movable section 3 that the loose section always remains within the circumference of the roll, and when the roll is rotated centrifugal force will tend to turn the movable section about its pivot pin so as to cause its gripping face 11 to cooperate with the gripping face 13 on the main or fixed section 1. It will be evident that should the rotary device be started inadvertently in its open position centrifugal force will close the device and the ends of the strip of abrasive material will be ripped tightly between the faces 11, 13 of the fixed and movable sections.

It should be noted that the fixed section 1 is greater than a half-section of the device, that the movable section 3 is less than a half-section, and that there are formed two joints of different types. The joint formed between the ends 11 and 13 is an abutting joint which is adapted to grip securely the ends of the abrasive cover 9; but the oppo site ends of the sections overlap to form a lap joint so that portions of the ends which form it move past each other when the device is being opened or closed.

As an additional means for securing the movable section 3 in its closed position a catch is provided that is formed as a double link 19, one end of the said link being pivoted to the movable section at 21. The other end of the said link is provided with a pin 23 that slides along a cam-shaped slot 25 in the body of the roll, the pin 23 engaging one end of the cam-shaped slot 25 when the movable section is open (see Fig. 2) and the other end of the said slot when the said movable section is closed (see Fig. 1). One end of the cam-shaped slot 25 is slightly bent outward as at 27 so as to hold the pin 23 and lock the link 19 and consequently the movable section 3 when in its gripping position. A spring-pressed plunger 29 is mounted on the movable section (see Fig. 3) the said plunger pressing against a radial face 31 on the link 19 and tending to impel it an gularly outward into locking position. The other end of the cam-shaped slot may be slightly bent outward as at 33 so that when the movable section is open it will be locked in this position. This latter locking arrangement is so designed that it will be overcome by the centrifugal force acting on the said movable section so that the locking device will not prevent the said movable section from closing.

Although the invention has been set forth in connection with a particular abrading device, it should be understood that the invention is not limited in the scope of its application to the particular device shown and described.

Having described my invention what I claim as new and desire to secure by Letters Patent of the United States is 1. A rotary device for sustaining a cover of abrasive material comprising a plurality of relatively movable cover-supporting sec tions, one of said sections being adapted to be fastened to the driving shaft and the other section being movable with respect to the first in a path which lies substantially within the periphery of the rotary device.

2. A rotary device for sustaining a cover of abrasive material comprising a plurality of relatively movable cover-supporting sections arranged about a central axis, one of said sections being angularly movable about an axis eccentric to said central axis in a path which lies substantially within the periphery of the device.

3. A rotary device for sustaining a cover of abrasive material comprising a plurality of relatively movable cover-supporting sections, and connecting means between said sections constructed and arranged to permit portions of the end of one section to move approximately circumferentially past portions of the adjacent end of the other section.

4. A rotary device for sustaining a cover of abrasive material comprising a plurality of relatively movable cover-supporting sections constructed to grip between them the ends of the cover, and connecting means between said sections constructed and arranged to cause the centrifugal force generated by the rotation of the device to impart approaching movement to the sections.

5. A rotary device for sustaining a 'cover of abrasive material having a fixed section and a movable section between which two joints are formed, one of said joints being an abutting-joint to receive the ends of the cover and the other being a lap-joint, said sections being pivotally connected.

6. A rotary device for sustaining a cover of abrasive material having a fixed section and a movable section between which two joints are formed, one of said joints being an abutting-joint to receive the ends of the cover and the other being a lap-joint, and a pivot connecting said sections, the location of the pivot being such that angular move ment of the movable section causes the parts of the lap-jointto move past each other.

7. A rotary device for sustaining a cover of abrasive material comprising a fixed section, a movable section, said sections being provided with engaging ends to grip the ends of the cover between them, and a pivot connecting said sections, said pivot being located nearer to the gripping end of the movable section than to the other end.

8. A rotary device for sustaining a cover of abrasive material comprising relatively movable cover-supporting sections, one of said sections being greater than a half-section of the device, the other being less than a halfsection, two of the adjacent ends of said sections being adapted when brought together to form an abutting joint, and a pivot connecting said sections, said pivot lying adj acent to the plane of said joint.

9. A rotary device for sustaining a cover of abrasive material comprising a plurality of relatively movable cover-supporting sections constructed to grip between them the ends of the cover, connecting means between said sections constructed and arranged to cause the centrifugal force generated by the rotation of the device to impart approaching movement to the sections, and automatic means for locking said sections in closed position.

10. A rotary device for sustaining a cover of abrasive material comprising relatively movable cover-supporting sections arranged to grip between them the ends of the cover, one of said sections being provided with a cam slot, and a locking member pivoted to the other section and having a portion arranged to travel in said slot.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

JOSEPH GOULDBOURN.

Vitnesses KATHERINE PnX'roN, GLAUD RENNION.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, I). 0. 

